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哈尔滨师范大学 光电带隙材料省部共建教育部重点实验室,黑龙江 哈尔滨,150025
纸质出版日期:2017-12-5,
网络出版日期:2017-8-16,
收稿日期:2017-6-1,
修回日期:2017-7-25,
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孙英斐, 吕树臣, 孟庆裕等. NaY(MoO<sub>4</sub>)<sub>2</sub>:Er<sup>3+</sup>纳米晶体荧光粉的发光与光学温度传感特性[J]. 发光学报, 2017,38(12): 1582-1590
SUN Ying-fei, LYU Shu-chen, MENG Qing-yu etc. Luminescence and Optical Temperature Sensing Properties of NaY(MoO<sub>4</sub>)<sub>2</sub>:Er<sup>3+</sup> Nanocrystalline Phosphor[J]. Chinese Journal of Luminescence, 2017,38(12): 1582-1590
孙英斐, 吕树臣, 孟庆裕等. NaY(MoO<sub>4</sub>)<sub>2</sub>:Er<sup>3+</sup>纳米晶体荧光粉的发光与光学温度传感特性[J]. 发光学报, 2017,38(12): 1582-1590 DOI: 10.3788/fgxb20173812.1582.
SUN Ying-fei, LYU Shu-chen, MENG Qing-yu etc. Luminescence and Optical Temperature Sensing Properties of NaY(MoO<sub>4</sub>)<sub>2</sub>:Er<sup>3+</sup> Nanocrystalline Phosphor[J]. Chinese Journal of Luminescence, 2017,38(12): 1582-1590 DOI: 10.3788/fgxb20173812.1582.
采用熔盐法制备了不同煅烧温度的NaY(MoO
4
)
2
:Er
3+
荧光粉材料,样品的晶体结构与微观形貌由X射线衍射仪和场发射扫描电镜测得。Er
3+
掺杂的NaY(MoO
4
)
2
纳米晶体的斯托克斯荧光发射光谱是在不同煅烧温度下测得的。NaY(MoO
4
)
2
:Er
3+
荧光粉材料的两个能级
2
H
11/2
-
4
I
15/2
和
4
S
3/2
-
4
I
15/2
跃迁的发射强度比随煅烧温度的增加而减小。NaY(MoO
4
)
2
:Er
3+
荧光粉材料的温度传感特性依赖于Er
3
的两个热耦合能级
2
H
11/2
-
4
I
15/2
和
4
S
3/2
-
4
I
15/2
的发射强度。研究表明,在一个相对大的传感温度范围(303~573 K),600℃煅烧的样品的温度传感灵敏度比900℃煅烧的样品高,样品的温度传感灵敏度随煅烧温度的增加而减小,600℃煅烧的样品的温度传感灵敏度为1.3610
-2
K
-1
,比900℃煅烧的样品高76.6%。最后,解释了基于不同煅烧温度的温度传感灵敏度的物理机制。
The NaY(MoO
4
)
2
:Er
3+
phosphors derived at different calcination temperatures were prepared by molten salt method and the crystal structure and microscopic morphology were characterized by means of X-ray diffraction(XRD) and field emission scanning electron microscopy (FE-SEM). The Stokes fluorescence emission spectra of nanocrystals derived at different calcination temperatures have been measured. It can be found that the emission intensity ratio of
2
H
11/2
-
4
I
15/2
to
4
S
3/2
-
4
I
15/2
transitions from NaY(MoO
4
)
2
:Er
3+
increases with the decrease of the calcination temperature. Furthermore
the temperature sensing properties of NaY(MoO
4
)
2
:Er
3+
phosphors were studied based on the emission intensities from two thermally coupled
2
H
11/2
and
4
S
3/2
levels of Er
3+
. The results show that the temperature sensing sensitivity of the sample calcinated at 600℃ is somewhat higher than that of the sample calcinated at 900℃in a relatively wide range of sensing temperature (303-573 K). The sensing sensitivity increases with the decreasing of the calcination temperature
and a relative high sensitivity of 1.3610
-2
K
-1
is obtained for the sample calcinated at 600℃
which is about 76.6% higher than that of the sample obtained at 900℃. Finally
the physical mechanism for the calcination temperature-dependence of temperature sensing sensitivity was explained and predicted.
熔盐法NaY(MoO4)2:Er3+荧光粉温度传感
molten salt methodNaY(MoO4)2:Er3+ phosphorstemperature sensing
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